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3 years ago

Did dinosaurs exist at the same time as humans?

Biology

2 answers:

kipiarov [429]3 years ago

4 0

No, dinosaurs ruled the earth before humans.

Inga [223]3 years ago

3 0

No! After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth. However, small mammals (including shrew-sized primates) were alive at the time of the dinosaurs. Many scientists who study dinosaurs (vertebrate paleontologists) now think that birds are direct descendants of one line of carnivorous dinosaurs, and some consider that they in fact represent modern living dinosaurs. This theory remains under discussion and shows that there is still much we don't know about dinosaurs.

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Suppose a certain drug is tested in the laboratory and is found to create holes in both mitochondrial membranes. Scientists susp

Marat540 [252]

Answer:

The options to this question is incomplete, the correct options are:

A) the citric acid cycle.

B) oxidative phosphorylation.

C) glycolysis.

D) the citric acid cycle and oxidative phosphorylation

The answer is D

Explanation:

Cellular respiration is an important metabolic process carried out by the cells of living organisms including human cells. Aerobic cellular respiration involves three main stages viz: Glycolysis, Kreb's cycle, and Oxidative phosphorylation. These three processes occur to bring about the breakdown of glucose to synthesize ATP.

Glycolysis occurs in the cytoplasm while Kreb's cycle and Oxidative phosphorylation both occurs in the matrix and intracellular membrane of the Mitochondrion respectively. Hence, a drug that causes holes in both mitochondrial membranes will affect both Kreb's cycle and Oxidative phosphorylation.

3 0

3 years ago

consider the backwards activity [glyceraldehyde-3-phosphate] in the cell. how many metabolites result from this activity

matrenka [14]

While taking into account the cell's reverse action [glyceraldehyde-3-phosphate], 1 metabolites are produced by this activity.

<h3>What kind of metabolite is this example of?</h3>

Ethanol, cystine, aspartic acid, 5′ guanylic alkaline, acetic acid, uric acid, glycerol, etc. are a few examples of primary metabolites. Melanins, resins, solvents, ergot, alkaloids, herbicides, naphthalenes, nucleosides, levofloxacin, peptides, growth hormones, etc. are examples of secondary metabolites.

<h3>Why do metabolites affect the body in what ways?</h3>

Metabolism is the term used to describe the chemical reactions that take place in each cell of the body to transform food into energy (pronounced meh-TAB-uh-liz-um). Our bodies require this energy in order to function—to move, think, and develop. Proteins unique to the body control the chemical reactions involved in metabolism.

To know more about metabolites visit;

brainly.com/question/15094735

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6 0

1 year ago

Elizabeth and Steven are pushing the cabinet to the right. Elizabeth applies 5 a force of 40 N and Steven exerts a force of 55 N

AURORKA [14]

Answer:

95 N right

Explanation:

Given that,

Both Elizabeth and Steven pushes the cabinet to the right. Elizabeth applies 5 a force of 40 N and Steven exerts a force of 55 N.

As both forces are acting in same direction, they will add up. Net force is given by :

F = 40 N + 55 N

F = 95 N in right direction

Hence, the correct option is (d) "95 N right".

6 0

3 years ago

Use this branching diagram to answer the questions. IF U DONT KNOW THE ANSWER THEN DONT PUT AN ANSWER.

Airida [17]

Answer:

Explanation:

The common characters shared by frogs and pigeons are:

presence of jaws

four limbs

The frogs and pigeons share these characteristics because they both are derived or evolved from a common ancestor.

During the course of evolution, the jaws are evolved in beaks in birds or pigeon as beak is light-weight in comparison to jaws.

Similarly, the forelimbs get covered with feathers to become wings.

7 0

3 years ago

Read 2 more answers

What are enzymes and which work do they do in the body and how do they affect it

Anastaziya [24]

Answer:

Enzymes jobs are to cut(lyce) and to match make.

Explanation:

8 0

4 years ago