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2 years ago

Which of the following is used to determine if a star is moving closer to Earth? (2 points)

Biology

2 answers:

aleksklad [387]2 years ago

8 0

Answer:

Doppler shift

Explanation:

Zigmanuir [339]2 years ago

7 0

Doppler shift - if it’s red shift it’s moving away from you. If it’s blue shift it’s moving towards you.

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Need those 4 questions answered!! (Giving brainlest to whoever is first!)

Lilit [14]

1. the digestive system breaks down food and take the nutrients your body needs

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3 years ago

Read 2 more answers

Some midwestern farmland in the United States is covered by

forsale [732]

Answer:

dominant crops

Explanation:

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2 years ago

What is the DEPENDENT variable in this experiment? (Hint: What depends on the independent variable?)

Nutka1998 [239]

Could you give more information? For the most part, the dependent variable is what you’re recording. For example, if you wanted to see how plants would grow in different conditions, plant height would be the dependent variable. The height DEPENDS on the condition it was grown in. Hope this helps!

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2 years ago

In garden pea plants, purple flowers (P) are dominant to white flowers (p), and full pod shape (F) is dominant to constricted po

kifflom [539]

Answer:

The phenotypes are as follows

Purple, full- 9

Purple, constricted- 3

White, full- 3

White, constricted- 1

Genotype of parents are PpFf, each produce the following gametes: PF, Pf, pF and pf.

Explanation:

This is a dihybrid cross involving two distinct genes. One coding for flower color and the other for pod shape. The allele for purple color (P) is dominant over the allele for white color (p) while the allele for full pod (F) is dominant over the allele for constricted pod (f).

In a cross between two heterozygote parents i.e. PpFf × PpFf, each parent will produce the following gametes: PF, Pf, pF and pf. Using these gametes in a punnet square (see attached image) the following 16 offsprings will be produced in a phenotypic ratio: 9:3:3:1

Purple color, full pod- 9

Purple color, constricted pod- 3

White flower, full pod- 3

White flower, constricted pod- 1

7 0

3 years ago

Muscle contraction is an example of which of the following types of work? Group of answer choices electrical concentration heat

Citrus2011 [14]

Answer:

Muscle contraction is an example of mechanical contraction.

Explanation:

Muscular contraction is the activation of generating tension which appear in the muscle fiber as it does't change the length of muscle and is followed by muscular relaxation.

Muscle contraction is based on force and length.

The process of skeletal muscle contraction is an energy requiring process.

In order to perform mechanical work,actin and myosin utilizes the chemical energy into ATP that ultimately require during muscle contraction and relaxation.

In a working muscle,glucose is released from glycogen that are stored in the muscle by the process of glycolysis in which glucose broken down into ATP that is required by cells and tissues.

3 0

2 years ago