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3 years ago

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Red-green colorblindness is a sex-linked trait. a normal woman whose father was red-green colorblind marries a normal visioned m

an. what is the expected proportion of color-blind children?

1 answer:

Liono4ka [1.6K]3 years ago

6 0

Do a punnet square. I'm not doing it for u

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Calculate the number of cells in a hummingbird, assuming it has a mass of 10-2 kg.

Nikitich [7]

The number of cells in a hummingbird, given the data is 10¹² cells

<h3>How to determine the mass of one cell</h3>

We'll begin by obtained the mass of a cell. This can be obtained as illustrated below:

Mass of 1 cell = 10 × mass of bacterium

But

Mass of bacterium = 10⁻¹⁵ Kg

Thus,

Mass of 1 cell = 10 × 10⁻¹⁵ Kg

Mass of 1 cell = 10⁻¹⁴ Kg

<h3>How to determine the number of cells in the hummingbird</h3>

The number of cells in the hummingbird can be obtain as follow:

Mass of 1 cell = 10⁻¹⁴ Kg
Mass of hummingbird = 10⁻² Kg
Number of cells =?

Number of cells = Mass of hummingbird / mass of 1 cell

Number of cells = 10⁻² / 10⁻¹⁴

Number of cells = 10¹² cells

Thus, the number of cells in the hummingbird is 10¹² cells

Learn more about number of cells:

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Complete question

Calculate the number of cells in a hummingbird assuming the mass of an average cell is ten times the mass of a bacterium. The mass of a hummingbird is of the order of 10⁻² Kg and that of a bacterium is 10⁻¹⁵ Kg

4 0

2 years ago

3. Primary immunodeficiencies affecting T cells tend to be more severe than those affecting B cells because: A. T cells control

Gre4nikov [31]

Answer:

The correct answer is option C.

Explanation:

The adaptive immune is characterized by immunological memory, specificity, and self nonself recognition. These cells are involved in lymphocytes that fight against the specific antigen.

T cells tend to be more severely affected than the B cells by the primary immunodeficiencies however both are the major components of the adaptive immune system.

Thus, the correct answer is option C.

3 0

3 years ago

True or False: Water molecules, as a liquid, are very spread apart because of their attractions for one another.

Alex_Xolod [135]

Answer:

i think ; true

Explanation:

3 0

4 years ago

Read 2 more answers

During osmosis what molecule moves acros the membrance

quester [9]

Answer:

water molecules

Explanation:

5 0

3 years ago

Read 2 more answers

1. Name three muscles in the upper body, and describe their location. (anterior, posterior, etc.)

Kazeer [188]

1) - The coracobrachialis and pectoralis major muscles connect the humerus anteriorly to the scapula and ribs, flexing and adducting the arm toward the front of the body when you reach forward to grab an object.
- On the posterior side of the arm the teres major and latissimus dorsi extend and adduct the arm towards the scapula and vertebra when you pull an object down off of a shelf above your head.
- The deltoid and supraspinatus muscles run superiorly between the scapula and humerus to abduct as well as flex and extend the arm.

These muscles allow us to raise our arm in the air or swing the arm as in throwing a ball underhand.

2) cariac muscle makes up the heart, its involuntary, striated muscle that is found in the walls and histological foundation of the heart, specifically the myocardium. Cardiac muscle is one of three major types of muscle, the others being skeletal and smooth muscle.

3) Smooth muscles are composed of elongated, spindle shaped cells and are commonly involved in involuntary motions. Skeletal muscles allow movement by being attached to bones in the body. Skeletal muscles control voluntary movements which can be consciously controlled.

4) Calcium is a crucial part of muscle contraction. The ionic element is released from muscles during contraction and relaxation. The release of calcium helps propagate the muscle contraction and relaxation stages. An adenosine triphosphate molecule stores energy that is released and used by energy-consuming reactions, such as muscle contraction, transmission of nerve impulses and formation of other molecules. ATP is found in cells and is made from the breakdown of food. It is composed of oxygen, hydrogen, phosphorus and carbon atoms. The energy in an ATP molecule is locked within phosphate bonds, which hold its phosphate groups together.

5) The muscle would neither contract nor relax if ATP was'nt there. It would stay in the same state because ATP is required for contraction as well relaxation of muscle. That is why dead bodies become very stiff.

6 0

3 years ago